652   check(strpbrk("abcd", "z") == NULL, 1);	/* Not found. */  in test_strpbrk()
654   check(strpbrk(one, "c") == one+2, 2);	/* Basic test. */  in test_strpbrk()
655   check(strpbrk(one, "d") == one+3, 3);	/* End of string. */  in test_strpbrk()
656   check(strpbrk(one, "a") == one, 4);	/* Beginning. */  in test_strpbrk()
657   check(strpbrk(one, "") == NULL, 5);	/* Empty search list. */  in test_strpbrk()
658   check(strpbrk(one, "cb") == one+1, 6);	/* Multiple search. */  in test_strpbrk()
660   check(strpbrk(one, "b") == one+1, 7);	/* Finding first. */  in test_strpbrk()
661   check(strpbrk(one, "cb") == one+1, 8);	/* With multiple search. */  in test_strpbrk()
662   check(strpbrk(one, "db") == one+1, 9);	/* Another variant. */  in test_strpbrk()
664   check(strpbrk(one, "bc") == NULL, 10);	/* Empty string. */  in test_strpbrk()
666   check(strpbrk(one, "bcd") == NULL, 11);	/* Empty string. */  in test_strpbrk()
668   check(strpbrk(one, "bcde") == NULL, 12);	/* Empty string. */  in test_strpbrk()
669   check(strpbrk(one, "") == NULL, 13);	/* Both strings empty. */  in test_strpbrk()
671   check(strpbrk(one, "befg") == one+1, 14);	/* Finding first. */  in test_strpbrk()
672   check(strpbrk(one, "cbr") == one+1, 15);	/* With multiple search. */  in test_strpbrk()
673   check(strpbrk(one, "db") == one+1, 16);	/* Another variant. */  in test_strpbrk()
674   check(strpbrk(one, "efgh") == one+6, 17);	/* And yet another. */  in test_strpbrk()